package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.dto.DishPageQueryDTO;
import com.sky.dto.SetmealDTO;
import com.sky.vo.DishVO;
import com.sky.entity.Dish;
import com.sky.mapper.SetmealMapper;
import com.sky.vo.DishItemVO;
import lombok.extern.slf4j.Slf4j;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import com.sky.constant.StatusConstant;
import org.springframework.web.bind.annotation.*;
import java.util.List;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.beans.BeanUtils;
import com.sky.constant.PasswordConstant;
import com.sky.context.BaseContext;
import java.time.LocalDateTime;
import com.sky.dto.SetmealDTO;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.vo.SetmealVO;
import org.springframework.transaction.annotation.Transactional;
import com.sky.constant.MessageConstant;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.SetmealEnableFailedException;
import com.sky.mapper.DishMapper;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.Api;

@Service
public class SetmealServiceImp implements SetmealService {
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishMapper dishMapper;

    @Transactional
    public void saveWithDish(SetmealDTO setmealDTO){
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        //像套餐表插入数据
        setmealMapper.insert(setmeal);
        //获取生成的套餐id
        Long setmealId = setmeal.getId();

        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(setmealId);
        });
        //保存套餐和菜品的关联关系
        setmealDishMapper.insertBatch(setmealDishes);
    }

    /**
     * 分页查询
     * @param setmealPageQueryDTO
     * @return
     */
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        int pageNum = setmealPageQueryDTO.getPage();
        int pageSize = setmealPageQueryDTO.getPageSize();

        PageHelper.startPage(pageNum, pageSize);
        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }
    @Transactional
    public void deleteBatch(List<Long> ids) {
        //判断套餐状态是否可以删除
        ids.forEach(id -> {
            Setmeal setmeal = setmealMapper.getById(id);
            if (setmeal.getStatus() == 1) {
                //起售中的套餐不能删除
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        });
        //删除套餐表中的数据
        ids.forEach(id -> {
            setmealMapper.deleteById(id);
        });
        //删除套餐菜品关系表中的数据
        ids.forEach(id -> {
            setmealDishMapper.deleteBySetmealId(id);
        });
    }
    /**
     * 根据id查询套餐和套餐菜品关系
     * @param id
     * @return
     */
    public SetmealVO getByIdWithDish(Long id) {
        Setmeal setmeal = setmealMapper.getById(id);
        if (setmeal == null) {
            throw new RuntimeException("套餐不存在，id：" + id); // 或者返回 null / 自定义异常
        }
        List<SetmealDish> setmealDishes = setmealDishMapper.getBySetmealId(id);
        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(setmeal, setmealVO);
        setmealVO.setSetmealDishes(setmealDishes);
        return setmealVO;
    }

    /**
     *
     * @param setmealDTO
     */
    public  void update(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        //修改套餐表，执行更新
        setmealMapper.update(setmeal);
        //删除套餐和菜品的关联关系
        Long id = setmealDTO.getId();
        setmealDishMapper.deleteBySetmealId(id);
        //重新插入套餐和菜品的关联关系
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(id);
        });
        //重新插入套餐和菜品的关联关系，操作setmeal_dish表，执行insert
        setmealDishMapper.insertBatch(setmealDishes);
    }

    /**
     * 起售停售
     * @param status
     * @param id
     */

    public void startOrStop(Integer status, Long id) {
        if(status == StatusConstant.ENABLE){
            List<Dish> dishList = dishMapper.getBySetmealId(id);
            if(dishList != null && dishList.size() > 0){
                dishList.forEach(dish -> {
                    if(dish.getStatus() == StatusConstant.DISABLE){
                        throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                    }
                });
            }
        }
        Setmeal setmeal = Setmeal.builder()
                .status(status)
                .id(id)
                .build();
        setmealMapper.update(setmeal);
    }


        /**
         * 条件查询
         * @param setmeal
         * @return
         */
        public List<Setmeal> list(Setmeal setmeal) {
            List<Setmeal> list = setmealMapper.list(setmeal);
            return list;
        }

        /**
         * 根据id查询菜品选项
         * @param id
         * @return
         */
        public List<DishItemVO> getDishItemById(Long id) {
            return setmealMapper.getDishItemBySetmealId(id);
        }

}
